final it 4g
TRANSCRIPT
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Introduction
Impact of History
Different Networks Reason for New Research
Comparisons
Advantage
Disadvantage
Future Outlook
Conclusion
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0G Refers to pre-cell phone mobile telephony
technology, such as radio telephones that some
had in cars before the advent of cell phones.
One such technology is the Autoradiopuhelin
(ARP) ,launched in 1971 Finland as the countrys
first public commercial mobile network.
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Simplest type to wireless data.
Average Speed between 4800 to 9600 bps.
Analog
Continuous in amplitude and time.
Variations in the signal- disrupts over longdistances.
This technology was introduced in the 80s andcontinued until being replaced by the 2Gdigital phones
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Advantages
Wireless telecommunication technology
This Facilitates the voice calls and sending textmessages.
Different 1G standards were used in variouscountries.
Disadvantages
Require more battery power
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Digital consists of 1s and 0s. Digital data can be compressed and
multiplexed much more effectively than analogvoice encodings. Allows for lower powered radio signals that
require less battery power. CODEC introduction -program that encodes
and decodes digital data stream or signal. Translates data from digital to analog and vice
versa.
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Advantages The lower power emissions helped address health concerns. Going all-digital allowed for the introduction of digital data
services, such as SMS and email. Enhanced privacy
Disadvantages 2G's digital signals Cell towers had a limited coverage area Jagged Decay curve Abrupt dropped calls Analog gradual sound reduction
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.
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Large capacity and broadband capabilities
Allows the transmission of 384kbps for mobilesystems and up to 2Mbps
Global Roaming.
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Advantages
Increased spectrum efficiency 5Mhz
A greater number of users that can besimultaneously supported by a radio frequencybandwidth.
High data rates at lower incremental cost than
2G.
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High input fees for the 3G service licenses Great differences in the licensing terms Current high debt of many telecommunication
companies, making it more of a challenge tobuild the necessary infrastructure for 3G Government are forced to support to the
financially troubled operators 3G phones are expensive Lack of 2G mobile user buy-in for 3G wireless
service Lack of coverage because it is still a new
service.
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High-Speed data access
High-quality streaming video
Combination ofWi-Fi andWi-Max
SDR, OFDM, OFDMA andMIMO
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Limitation to meet expectations of applications likemultimedia, full motion video, wireless teleconferencing
Wider Bandwidth
Difficult to move and interoperate due to differentstandards hampering global mobility and service portability
Primarily Cellular (WAN) with distinct LANs; need a newintegrated network
Limitations in applying recent advances in spectrally more
efficient modulation schemes Need all all digital network to fully utilize IP and converged
video and data
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What is 4G? Fourth Generation Technology
Faster and more reliable 100Mb/s (802.11g wireless = 54Mb/s, 3G = 2Mb/s) Lower cost than previous generations Multi-standard wireless system Bluetooth,Wired,Wireless (802.11x) Ad Hoc Networking IPv6 Core OFDM used instead of CDMA Potentially IEEE standard 802.11n Most information is proprietary
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AT & T
Sprint-Nextel
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Increase in Data Speed-Indoors&Outdoors
Decrease in Congestion Risk
Real time streaming of Audio&Video
Better Quality
High Security
All types of Services
Affordable Cost
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Technology 3G 4G
Data Transfer Rate 3.1MB/sec 100MB/sec
Internet Services Broadband Ultrabroadband
Mobile-TV Resolution Low High
Bandwidth 5-20MHz 100+MHz
Frequency 1.6-2 GHZ 2-8 GHZ
Network Architecture Wide Area Network Hybrid Network
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Multimedia
AnytimeMobile anywhere
GlobalMobility Support
IntegratedWireless Solution
Customized Personal Service
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Battery usage is more
Hard to implement
Need complicated hardware
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Socio-Economic Impact
More affordable communication services
One device can communicate with all vs. many devicescommunicating with some devices
TV, internet, phone, radio, home environment sensorsall reachable through one device the cell phone
Streaming HD video
Too connected? Increase in social networking, invasion of privacy,
security concerns.
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4G is coming quicker
Wireless is cheaper
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High Speed, Capacity, low cost per bit
Single worldwide cellular network
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THANK U
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Abhishek Jagwani
Anusha Khan
Dhaval Shah
KailashMotwani
Kanchan Ahuja
Neha Punjabi
Sanjay Bhatia